nVent Raychem SENZ is a line of WiFi digital timer thermostats for electric underfloor heating, sold under the nVent Raychem name. A thermostat connects to the home Wi-Fi network and is set up and scheduled from the SENZ-WIFI app. Current app listings and support pages name Chemelex as the operator.
SENZ thermostats connect over Wi-Fi to the vendor's cloud. There is no hub to buy: the app, the Alexa and Google voice links, the Home Assistant and Homey integrations and the developer API all go through that cloud, and every integration we found works that way rather than locally.
That suits people who want to schedule or adjust a heated floor from a phone, a smart speaker or an existing Home Assistant or Homey setup. It is weaker for local-only or Matter-based homes, since we found no Matter, Apple Home or local control option, and the Homey app needs a Homey Bridge.
Connection
Wi-Fi, through the SENZ cloud
Voice assistants
Alexa and Google Assistant
Matter
Not found
Open platforms
Home Assistant, Homey and a cloud API
What can be connected
Floor heating SENZ WiFi digital timer thermostats for electric underfloor heating cables and mats
Groups Several thermostats managed together from one app account
Energy Heating and energy use shown by hour, week or month in the app
The only app found for the thermostat. It views and sets a Raychem SENZ-WIFI thermostat, changes schedules and settings, handles up to 32 thermostats and shows energy use by hour, week or month. Both listings name Chemelex LLC as publisher. The App Store page does not mention voice assistants, and some Google Play reviews describe the app as limited, with certain settings only available on the thermostat itself.
Official supported by the brandCommunity built by someone elseNot found searched, nothing foundUnconfirmed sources conflict or could not be opened
Platform
Status
What it means
Sources
Connection
Wi-Fi
Yes
nVent's product data lists Wi-Fi as the communications protocol, with remote operation through the app. The thermostat can run on its own or as part of a group. We found no Wi-Fi band stated on the pages we read.
Supported through an Alexa Skill. The setup needs a SENZ-WIFI app account, a linked thermostat and the Alexa app. The brochure names Echo, Echo Dot and Echo Plus as examples.
Supported through the Google Home app, with the same SENZ-WIFI account and linked thermostat. The brochure names Google Home, Nest Mini, Nest Audio and Nest Hub as examples.
Home Assistant has a built-in nVent RAYCHEM SENZ integration for SENZ-WIFI thermostats, introduced in release 2022.5. It is classed as cloud polling, so Home Assistant queries the vendor's cloud rather than receiving pushed updates. It is maintained by a community contributor, not by nVent. Home Assistant lists about 172 active installations.
A SENZ-WIFI app is listed on the Homey app store, with the publisher shown as Webed Solutions and the label Official. The Homey forum thread says it was written by an independent developer with API access and support from nVent. The listing shows Homey Cloud, Homey Pro, Homey Pro mini and Self-Hosted Server under Works on, but also says Homey Bridge required, and needs an active Chemelex account. Flow cards cover temperature, heating state and operating mode. The page says it connects through the cloud.
A REST API for third-party developers, exchanging JSON, with list and read calls for thermostats and accounts and calls to set the mode. Access uses OAuth2 and OpenID Connect, and a ClientID must first be requested from SENZ support through a form. The docs describe only hosted cloud endpoints. Change notifications are available over SignalR.
Not mentioned on the nVent or Chemelex pages we read. We did not check IFTTT's own site.
Searched, no source
Checked 11 November 2026 against the brand's own pages, app store listings and each project's own page. “Not found” means we searched and found nothing, not that it is impossible. Compatibility changes often. Spot an error? Tell us and we will fix it.
Common questions about nVent Raychem SENZ
Does nVent Raychem SENZ support Matter?
Not that we could find. No Matter support found on the nVent or Chemelex pages we read. We did not find a dedicated announcement.
Does nVent Raychem SENZ work with Alexa?
Yes, officially. Supported through an Alexa Skill. The setup needs a SENZ-WIFI app account, a linked thermostat and the Alexa app. The brochure names Echo, Echo Dot and Echo Plus as examples.
Does nVent Raychem SENZ work with Google Home?
Yes, officially. Supported through the Google Home app, with the same SENZ-WIFI account and linked thermostat. The brochure names Google Home, Nest Mini, Nest Audio and Nest Hub as examples.
Does nVent Raychem SENZ work with Apple Home (HomeKit)?
Not that we could find. Not mentioned on the nVent or Chemelex pages we read, and we did not search for a community bridge.
Does nVent Raychem SENZ work with Home Assistant?
Yes. Home Assistant has a built-in nVent RAYCHEM SENZ integration for SENZ-WIFI thermostats, introduced in release 2022.5. It is classed as cloud polling, so Home Assistant queries the vendor's cloud rather than receiving pushed updates. It is maintained by a community contributor, not by nVent. Home Assistant lists about 172 active installations.
Does nVent Raychem SENZ work with SmartThings?
Not that we could find. No SmartThings integration found on the pages we read.
Does nVent Raychem SENZ work with Homey?
Yes, officially. A SENZ-WIFI app is listed on the Homey app store, with the publisher shown as Webed Solutions and the label Official. The Homey forum thread says it was written by an independent developer with API access and support from nVent. The listing shows Homey Cloud, Homey Pro, Homey Pro mini and Self-Hosted Server under Works on, but also says Homey Bridge required, and needs an active Chemelex account. Flow cards cover temperature, heating state and operating mode. The page says it connects through the cloud.
Does nVent Raychem SENZ work with Hubitat?
Not that we could find. No driver found in the searches we ran.
Answers come from the sourced table above. See how nVent Raychem SENZ compares with all brands on the smart home brand statistics page.